【作者】 宋燕星；

【导师】 陈玉全；

【作者基本信息】 哈尔滨理工大学 ， 机械制造及其自动化， 2005， 硕士

【摘要】 当今,随着塑料工业的迅速发展,塑料制品在许多工业部门的应用范围越来越广,这就使产品对注塑模具的要求越来越高,传统的注塑模具设计方法已无法适应产品更新换代和提高质量的要求。注塑模具CAE 技术可在模具制造之前,在计算机上对模具设计方案进行分析和模拟来代替实际的试模,预测设计中潜在的缺陷,突破了在传统的注塑机上的反复试模、修模的束缚。同传统的模具设计相比,CAE 技术在提高生产率、保证模具设计和产品质量,降低成本、减轻劳动强度,起到了不可估量的作用。本文应用Moldflow/MPI 注塑分析软件,针对赛马汽车复杂内塑料饰件的整个注塑成型过程进行注塑参数预分析,确定了制件成型的参数。并在此基础上对三种成型方案进行了流变、冷却和翘曲的模拟分析,模拟熔融体在型腔中的填充、保压、冷却情况,准确预测了制件成型过程中的应力分布、收缩和翘曲变形等情况,通过对分析结果的比较分析确定了最佳的成型方案。最后对所选择的较好的成型方案做了进一步优化分析,对塑料模具的注塑工艺参数,包括模具温度、熔体温度等进行优化,从而得到优化最佳的成型方案,以最低的生产成本、最高的生产效率使制件达到最佳的注塑效果。更多还原

【Abstract】 Nowadays, more and more industrial departments use plastic parts with the rapid development of the plastic industry, which demands better and better quality of the injection moulds. So the traditional design of the moulds can’t adapt it. The injection mould CAE can analyze and simulate the molding process in computer and forecast the disadvantages of the design before the injection moulds are made. This simplifies the conventional means of testing moulds repeatedly and repairing moulds on the injecting molding machine. Compared with the traditional design way of the injection moulds, CAE can increase the productivity, get good quality of moulds and parts, reduce cost and lessen labor intensity, and it will play a tremendous role in plastic industry. This paper uses Moldflow/MPI to analyze the mould of the plastic part of the Sai-ma cars, including pre-analyzing the molding process and choosing the molding parameters, doing flow analysis, cooling analysis and warp analysis of three molding scheme, simulating how the plastic polymer filling, packing and cooling in the mould and forecasting the stress distributing, volumetric shrinkage and warp etc, then choose the best molding design. At last, optimize the best molding design including the molding parameters such as mold temperature, melt temperature etc in order to get the best injection molding part with the lowest cost and the highest productivity.更多还原